You're suggesting Bitcoin just proved it can't scale, but it actually just proved it did--just not with transaction volume. The network continued to process transactions averaging one block every ten minutes exactly as it was built to do, despite the heavy load.
To put it differently: A different online payment system could have stopped accepting transactions, or run out of resources, allow transactions it shouldn't have, disallow ones it should, or something else terrible. But Bitcoin didn't. If you wanted into the next block, you'd need to pay more, but that's (from a technical perspective) entirely by design.
What Bitcoin is proving is that it has clear and well-understood limits and continues to work well within them, and that's incredibly important for public perception. IMO, if Bitcoin's transaction capacity never scales, it'll still be a huge technological success. Other cryptocurrencies can try their hand at scaling, but Bitcoin needs to be rock solid to the extent possible for all cryptocurrencies' sake.